You may want to create client specific courses that are not crawled by google.
You will need to edit each course and update the setup to stop google crawling.
Turn off SEO on Courses
Login as Admin
Open Courses Plugin
Select a course
Select the SEO tab
On the ‘X-Robots-Tag’ select ‘No Index, No follow’ from the dropdown
The course will not be visible by Search Engines.
This update may take approx a week to update via google